The factor f0 of FAG deep groove ball bearings is equivalent to the static load of the bearing. In fact, the load generated at the center of the contact point of maximum load between the rolling element and raceway contact surface is the same as that under combined load. For bearings subject to static loads, the following formula is used: load ratio and equivalent static load F0a N bearing axial static load F0r N bearing radial static load P0 N equivalent static load of the bearing under combined load. Axial load capacity deep groove ball bearings are also suitable for bearing axial loads. If the bearings are operating at high speeds and are subjected to heavy loads, the reduction in bearing life due to increased friction and temperature must be considered. Minimum radial load In order to avoid slippage when the bearing is running, the bearing must bear a minimum radial load. This is especially important for high speed and high acceleration conditions. Under continuous operation conditions, the minimum radial load for ball bearings with cages must satisfy P/Cr 0.01. The speed limit speed nG indicates that the bearing can be used safely below this speed. In the case of improving the geometric accuracy of the bearing, in some special conditions, the limit speed nG can be exceeded. The following important influencing factors: ■ Cage design ■ Cage material ■ Lubricant ■ Lubrication method ■ Internal clearance ■ Machining of bearing mating surfaces ■ Bearing load ■ Heat dissipation. If there are applications where the limiting speed nG is exceeded, we recommend that you consult a Schaeffler application engineer in order to determine whether the application conditions of the bearing can meet the high speed requirements. The maximum value of the chamfer radius ra of the adjacent structure and the limit values u200bu200bof Da and da of the adjacent shoulder are given in the installation dimension table. Dimensions D2 and d2 values u200bu200bfor C series bearings may differ from standard bearings in the HR 1 catalogue. The main dimensions of the single row deep groove ball bearings of the precision standard conform to DIN 625-1 (ISO 15). Dimensional and geometrical tolerances The dimensional and geometrical tolerances of standard bearings are tolerance class 6, in accordance with the standard ISO 492:2014. Bearings with higher precision grades can also be obtained by agreement. Internal radial clearance of cylindrical bore bearings Internal radial clearance group CN (Group N) conforms to DIN 620-4 (ISO 5753-1). Internal radial clearance CM of bearings for motors with internal radial clearance